Theratools Basalt Stone Set, Medium

Balanced, ergonomic, and reliably warm—these medium basalt stones are ideal for addressing mid-sized muscle groups with comfort and control. Sized for the calves, upper arms, and shoulders, each stone delivers smooth glide and steady heat. Hand-selected and polished from Peruvian river stone, they feel secure in the palm and versatile in motion—making them a go-to choice for effleurage, petrissage, and tension-relief work.

Theratools is a WBENC-certified, woman-owned brand passionate about professional care. Our basalt stones are naturally shaped over time in the rivers of Peru, then hand-selected and sorted for quality, size consistency, and comfortable ergonomics to support a balanced, professional treatment experience.

Available Options

• CST44: 8-piece set – Ideal for full-body services or busy multi-stone protocols

• TT121: 2-piece set – Perfect for targeted use or smaller service menus

Features

• Designed for mid-range muscle areas like calves and shoulders
• Smooth surface with gently domed shape for natural grip and comfort
• High-density basalt holds warmth and glide well during longer sessions
• Consistent finish for even movement and easy sanitation
• Durable and therapist-friendly

Why You’ll Love These

• Perfect size and weight for mid-sized areas needing both pressure and finesse
• Comfortable to hold for extended use without fatigue
• Consistent warmth enhances circulatory and relaxation-focused work
• A reliable staple for both full-body and targeted massage

Treatment Recommendations

Warm stones using a safe, professional method such as a roaster-style warmer, Theratools Warming Tray, or Mobile Warming Bag. Always test the stone on your forearm first—it should feel comfortably warm, never hot. Then, check in with your client before placement to ensure it feels safe and soothing. Use in sweeping strokes on the calves, biceps, and shoulders to release tension, support circulation, and provide soothing thermal comfort. These stones strike an ideal balance of heat, control, and ergonomic ease.

Best Used For

• Circulatory massage
• Effleurage and petrissage
• Mid-sized muscle areas (arms, calves, shoulders)
• General or targeted full-body protocols

Historical & Interesting Facts

• Warm stones have been used globally to encourage circulation and ease muscular tension
• In traditional Hawaiian Lomilomi, heated stones were used to warm and soften tissues
• Basalt's volcanic origin gives it high heat retention, making it ideal for extended sessions
• Naturally formed by river movement, these stones carry symbolic ties to flow, balance, and resilience

Care, Use & Safety

• Warm using a safe, professional method
• Always test temperature before client application
• Use a barrier or massage medium when appropriate
• Wash with soap and warm water, then disinfect with an EPA-registered spray or wipe after every service
• Avoid sudden temperature changes and handle with care
• Cool completely before storage

Technical Specs (per stone)

• Material: Iron-rich basalt
• Density: ~2.9 g/cm³
• Size Range: Approximately 2.5–3″ diameter
• Shape: Smooth, slightly domed with rounded edges
• Use: Heated applications
• Sanitation: Soap and warm water, followed by EPA-registered disinfectant

Please Note
As with all natural basalt, size, color, and surface characteristics may vary slightly from piece to piece.